I’m sorry you’re dealing with feelings from your rejections; that’s very natural. The good news is that you’ve got three acceptances, two of which are affordable!
If the waitlist data from last year repeats itself, then it seems as though you may have a good chance. That said, however, I would move forward with one of your two sure things and get excited about them.
MSU is not your last-ditch option. You’ve already got two affordable options. That means you have choices!
Western Michigan
In addition to summer orientation, incoming first year students participate in Fall Welcome which has students move in a little early and then has several days of programming to help students adjust to campus, including getting to know professors in related areas, having games and activities to get to know peers, etc. Students can sign up for a class called First-Year Experience which helps tie students in with resources at the college and how to pursue their own goals at WMU. There’s also a Health Professionals Living Learning Community which might be of interest, based on your major, which can surround you with like-minded peers and study buddies. Additionally, Western Michigan allows students to cross-register at Kalamazoo College, so there’s opportunity for additional classes and potentially other connections with faculty. And it’s possible for you to submit an application for the honors college right now!
Wayne State
The First-Year Residential Experience (FYRE) is designed for incoming students to really become connected with the university. And if there’s no Living Learning Community that feels compelling, the university encourages students to suggest new options and provides the contact info to do so (source). If you’re interested in research, Wayne State is a great place to be. The Undergraduate Research Opportunities Program provides funding for undergraduate research. And before directing your own research, departmental websites provide students with advice on how to join a faculty’s research team (for neuroscience, psychology, and biology, the latter two are much clearer in spelling out their faculty’s research topics, several of which would likely to appeal to someone interested in neuroscience). If you weren’t offered a spot in the honors college, you can apply again after completing your first semester (and you might even see if they would be willing to consider an appeal based on the changed trajectory in your grades).
And these options and possibilities were found with just a little bit of research. This is your time to dive in and look at the clubs, faculty, courses, etc, to see where you think is the best fit for you. Send in your deposit and be all-in for that college. Then if you get off the waitlist at MSU you can look at what’s available there to see if you think it’s a better fit than the college your originally chose.
Wishing you the best and hoping you’ll let us know what you decide.